| Business | Phone |
| Respirtek Inc 14373 Jim Byrd Rd, Biloxi 39532 | (228) 392-7977 |
| United States Environmental 1636 Popps Ferry Rd, Biloxi 39532 | (228) 396-3866 |
| Center For Environmental 336 Rodenberg Ave, Biloxi 39531 | (228) 374-3010 |
| Envirosouth 12305 Cedar Lake Rd, Biloxi 39532 | (228) 354-8660 |